Use glob API in sieve

* libmu_sieve/comparator.c: Use mu_glob_compile instead of fnmatch.

-Subproject commit 42f4712085b40173eaea58e14b1a579291a6fe3a
+Subproject commit fd86bf7d44b0c970771830692ae7491447ebe8b1

 # List of gnulib modules needed for GNU mailutils.
 # A module name per line. Empty lines and comments are ignored.
 
-# FIXME: fnmatch, regex and glob are used by libmailutils...
+# FIXME: regex and glob are used by libmailutils...
 
 autobuild
 crypto/des

@@ -25,7 +25,6 @@
 #include <unistd.h>  
 #include <string.h>  
 #include <sieve-priv.h>
-#include <fnmatch.h>
 #include <regex.h>
 #include <mailutils/cctype.h>
 #include <mailutils/cstr.h>
@@ -102,6 +101,25 @@ compile_pattern (mu_sieve_machine_t mach, mu_sieve_string_t *pattern, int flags)
   pattern->rx = preg;
 }
 
+static void
+compile_wildcard (mu_sieve_machine_t mach, mu_sieve_string_t *pattern,
+		  int flags)
+{
+  int rc;
+  regex_t *preg;
+
+  if (pattern->rx)
+    return;
+  preg = mu_sieve_malloc (mach, sizeof (*preg));
+  rc = mu_glob_compile (preg, pattern->orig, flags);
+  if (rc)
+    {
+      mu_sieve_error (mach, _("can't compile pattern"));
+      mu_sieve_abort (mach);
+    }
+  pattern->rx = preg;
+}
+
 static int
 comp_false (mu_sieve_machine_t mach, mu_sieve_string_t *pattern,
 	    const char *text)
@@ -263,7 +281,8 @@ static int
 i_octet_matches (mu_sieve_machine_t mach, mu_sieve_string_t *pattern,
 		 const char *text)
 {
-  return fnmatch (pattern->orig, text, 0) == 0;
+  compile_wildcard (mach, pattern, 0);
+  return regexec ((regex_t *)pattern->rx, text, 0, NULL, 0) == 0;
 }
 
 static int
@@ -300,7 +319,8 @@ static int
 i_ascii_casemap_matches (mu_sieve_machine_t mach,
 			 mu_sieve_string_t *pattern, const char *text)
 {
-  return fnmatch (pattern->orig, text, FNM_CASEFOLD) == 0;
+  compile_wildcard (mach, pattern, MU_GLOBF_ICASE);
+  return regexec ((regex_t *)pattern->rx, text, 0, NULL, 0) == 0;
 }
 
 static int